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<html lang="zh-Hans">
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    <title>计算器</title>
    <link rel="stylesheet" href="./css/normalized.css">
    <link rel="stylesheet" href="./css/index.css">
</head>
<body>
    <!-- 结果 -->
    <div class="result-box">
        <span class="result">0</span>
    </div>
    <!-- 按键 -->
    <main class="keys-box">
        <section class="keys handler">AC</section>
        <section class="keys handler">+/-</section>
        <section class="keys handler">%</section>
        <section class="keys operator">÷</section>
        <section class="keys number">7</section>
        <section class="keys number">8</section>
        <section class="keys number">9</section>
        <section class="keys operator">×</section>
        <section class="keys number">4</section>
        <section class="keys number">5</section>
        <section class="keys number">6</section>
        <section class="keys operator">-</section>
        <section class="keys number">1</section>
        <section class="keys number">2</section>
        <section class="keys number">3</section>
        <section class="keys operator">+</section>
        <section class="keys zero number">0</section>
        <section class="keys number">.</section>
        <section class="keys operator">=</section>
    </main>
    <script src="./js/functions.js"></script>
    <script src="./js/index.js"></script>
</body>
</html>